Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A driving method for a display panel, comprising dividing a plurality of pixel units of the display panel into a plurality of pixel groups, wherein each pixel group comprises three columns of continuously arranged pixel units, and the three columns of continuously arranged pixel units comprise a first position pixel unit, a second position pixel unit and a third position pixel unit respectively, the plurality of pixel units comprises a plurality of first pixel units and a plurality of a second pixel units, and each pixel unit comprises a plurality of sub-pixels; applying a drive voltage opposite to a polarity of the first position pixel unit to the second position pixel unit and the third position pixel unit in a same pixel group respectively; applying drive voltages of opposite polarities to every adjacent two columns of the sub-pixels in a same column of the pixel units respectively, and applying drive voltages of a first voltage level to the sub-pixels in the first pixel units while applying drive voltages of a second voltage level different from the first voltage level to the sub-pixels in the second pixel units, wherein the plurality of sub-pixels in the same pixel unit are applied with the drive voltages of a same one of the first voltage level and the second voltage level; wherein the first pixel units and the second pixel units are arranged alternately in each row as well as in each column in the display panel; and wherein in every adjacent two frame display times, the drive voltage of the same sub-pixel is changed in polarity while the drive voltage of the same sub-pixel is kept unchanged in voltage level, and in each of the adjacent two frame display times, the sub-pixels in each column have a same polarity.
2. The driving method according to claim 1 , wherein applying a drive voltage opposite to a polarity of the first position pixel unit to the second position pixel unit and the third position pixel unit in a same pixel group respectively comprises applying drive voltages of opposite polarities to the first position pixel unit and the second position pixel unit in the same pixel group respectively; and applying a drive voltage same as the polarity of the second position pixel unit to the third position pixel unit in the same pixel group.
This invention relates to a driving method for pixel units in a display panel, specifically addressing the issue of image quality degradation due to uneven charge distribution and flicker in active matrix displays. The method involves controlling the polarity of drive voltages applied to pixel units within a pixel group to reduce visual artifacts. The method applies drive voltages of opposite polarities to a first and a second pixel unit in the same pixel group, while applying a drive voltage of the same polarity as the second pixel unit to a third pixel unit in the group. This ensures balanced charge distribution across the pixel units, minimizing flicker and improving display uniformity. The technique is particularly useful in displays where pixel units are arranged in groups, such as in organic light-emitting diode (OLED) or liquid crystal display (LCD) panels, where maintaining consistent brightness and reducing power consumption are critical. By dynamically adjusting the polarity of the drive voltages, the method mitigates the effects of charge accumulation and uneven aging of display elements, leading to a longer lifespan and better performance of the display panel. The approach is designed to work with existing display architectures without requiring significant hardware modifications, making it suitable for integration into various display technologies.
3. The driving method according to claim 2 , wherein the pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel which are arranged in sequence; applying drive voltages of opposite polarities to the first position pixel unit and the second position pixel unit in the same pixel group respectively; and applying a drive voltage same as the polarity of the second position pixel unit to the third position pixel unit in the same pixel group, comprises in the same pixel group, applying a drive voltage of a first polarity to the first sub-pixel and the third sub-pixel of the first position pixel unit respectively, applying a drive voltage of a second polarity to the first sub-pixel and the third sub-pixel of the second position pixel unit respectively, and applying a drive voltage of a second polarity to the first sub-pixel and the third sub-pixel of the third position pixel unit respectively; and applying a drive voltage of a second polarity to the second sub-pixel of the first position pixel unit, applying a drive voltage of a first polarity to the second sub-pixel of the second position pixel unit, and applying a drive voltage of a first polarity to the second sub-pixel of the third position pixel unit; wherein the first polarity and the second polarity are opposite polarities.
This invention relates to a driving method for a display panel, specifically addressing the problem of image quality degradation due to uneven charge distribution and flicker in active matrix displays. The method involves driving pixel units arranged in groups, where each pixel unit contains three sub-pixels (first, second, and third) arranged sequentially. Within each pixel group, adjacent pixel units receive drive voltages of opposite polarities, while the third pixel unit in the group shares the same polarity as the second pixel unit. The first and third sub-pixels of the first pixel unit receive a first polarity voltage, while the second sub-pixel receives a second polarity voltage. The first and third sub-pixels of the second pixel unit receive the second polarity voltage, and the second sub-pixel receives the first polarity voltage. The third pixel unit follows the same pattern as the second pixel unit. This alternating polarity scheme reduces flicker and improves display uniformity by balancing charge distribution across sub-pixels. The method ensures that adjacent sub-pixels within a pixel unit and adjacent pixel units in a group have opposite polarities, minimizing visual artifacts and enhancing display performance.
4. The driving method according to claim 1 , wherein applying a drive voltage opposite to a polarity of the first position pixel unit to the second position pixel unit and the third position pixel unit in a same pixel group respectively comprises applying drive voltages of opposite polarities to the first position pixel unit and the second position pixel unit in the same pixel group respectively; and applying a drive voltage same as the polarity of the second position pixel unit to the third position pixel unit in the same pixel group; wherein the pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel arranged in sequence; applying drive voltages of opposite polarities to the first position pixel unit and the second position pixel unit in the same pixel group respectively; and applying a drive voltage same as the polarity of the second position pixel unit to the third position pixel unit in the same pixel group, comprises in the same pixel group, applying a drive voltage of a first polarity to the first sub-pixel and the third sub-pixel of the first position pixel unit respectively, applying a drive voltage of a second polarity to the first sub-pixel and the third sub-pixel of the second position pixel unit respectively, and applying a drive voltage of a second polarity to the first sub-pixel and the third sub-pixel of the third position pixel unit respectively; and applying a drive voltage of a second polarity to the second sub-pixel of the first position pixel unit, applying a drive voltage of a first polarity to the second sub-pixel of the second position pixel unit, and applying a drive voltage of a first polarity to the second sub-pixel of the third position pixel unit; wherein the first polarity and the second polarity are opposite polarities.
This invention relates to a driving method for a display panel, specifically addressing the issue of image flicker and uneven brightness caused by inconsistent polarity distribution in pixel units. The method involves applying drive voltages to pixel units arranged in a specific sequence to mitigate visual artifacts. Each pixel unit contains three sub-pixels arranged in sequence: a first sub-pixel, a second sub-pixel, and a third sub-pixel. The method applies drive voltages of opposite polarities to adjacent pixel units within the same pixel group. For the first position pixel unit, the first and third sub-pixels receive a drive voltage of a first polarity, while the second sub-pixel receives a drive voltage of a second polarity. The second position pixel unit receives opposite polarities: the first and third sub-pixels get the second polarity, and the second sub-pixel gets the first polarity. The third position pixel unit follows the second position pixel unit's pattern, with the first and third sub-pixels at the second polarity and the second sub-pixel at the first polarity. This alternating polarity distribution ensures balanced charge accumulation and reduces flicker, improving display quality. The method is particularly useful in active matrix organic light-emitting diode (AMOLED) displays where polarity control is critical for stable operation.
5. A display device, comprising a display panel and a driving device connected to the display panel, wherein the driving device is configured for dividing a plurality of pixel units of the display panel into a plurality of pixel groups, such that each pixel group comprises three columns of continuously arranged pixel units, and the three columns of continuously arranged pixel units are a first position pixel unit, a second position pixel unit and a third position pixel unit respectively, the plurality of pixel units comprises a plurality of first pixel units and a plurality of a second pixel units, and each pixel unit comprises a plurality of sub-pixels; configured for applying a drive voltage opposite to a polarity of the first position pixel unit to the second position pixel unit and the third position pixel unit in a same pixel group respectively; configured for applying drive voltages of opposite polarities to every adjacent two columns of the sub-pixels in a same column of the pixel units respectively; and configured for applying drive voltages of a first voltage level to the sub-pixels in the first pixel units while applying drive voltages of a second voltage level different from the first voltage level to the sub-pixels in the second pixel units, wherein the plurality of sub-pixels in the same pixel unit are applied with the drive voltages of a same one of the first voltage level and the second voltage level; wherein the first pixel units and the second pixel units are arranged alternately in each row as well as in each column in the display panel; and wherein in every adjacent two frame display times, the drive voltage of the same sub-pixel is changed in polarity while the drive voltage of the same sub-pixel is kept unchanged in voltage level, and in each of the adjacent two frame display times, the sub-pixels in each column have a same polarity.
This invention relates to a display device designed to reduce visual artifacts such as flicker and crosstalk by optimizing pixel driving schemes. The device includes a display panel and a driving circuit that organizes pixel units into groups of three adjacent columns, each containing first, second, and third position pixel units. The driving circuit applies opposite polarity voltages to the second and third pixel units relative to the first pixel unit within each group. Additionally, adjacent sub-pixels in the same column receive opposite polarity voltages, while sub-pixels within the same pixel unit share the same voltage level. The pixel units are arranged in an alternating pattern across rows and columns. The driving scheme alternates polarity between frames while maintaining consistent voltage levels for each sub-pixel, ensuring uniform polarity within each column per frame. This approach minimizes visual distortions by balancing charge distribution and reducing interference between adjacent pixels. The invention addresses common display issues like flicker and image retention by dynamically adjusting drive voltages while preserving image quality.
6. The display device according to claim 5 , wherein applying a drive voltage opposite to a polarity of the first position pixel unit to the second position pixel unit and the third position pixel unit in a same pixel group respectively, comprises: applying drive voltages of opposite polarities to the first position pixel unit and the second position pixel unit in the same pixel group respectively; and applying a drive voltage same as the polarity of the second position pixel unit to the third position pixel unit in the same pixel group.
This invention relates to display devices, specifically addressing the challenge of improving image quality by managing drive voltage polarities in pixel units within a display panel. The technology focuses on reducing visual artifacts such as flicker or uneven brightness by controlling the polarity of drive voltages applied to pixel units in a pixel group. The display device includes multiple pixel groups, each containing at least three pixel units positioned in different locations. The invention ensures that the drive voltage applied to a second and third pixel unit in a group has an opposite polarity to the first pixel unit, while also ensuring the second and third pixel units have opposite polarities to each other. This configuration helps balance electrical stress across the display and minimizes distortion. The method involves applying a drive voltage of one polarity to the first pixel unit, a drive voltage of the opposite polarity to the second pixel unit, and a drive voltage matching the second pixel unit's polarity to the third pixel unit. This approach optimizes voltage distribution within each pixel group, enhancing display performance and longevity. The solution is particularly useful in active matrix displays where precise voltage control is critical for maintaining image uniformity.
7. The display device according to claim 5 , wherein the pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel which are arranged in sequence; applying a drive voltage opposite to a polarity of the first position pixel unit to the second position pixel unit and the third position pixel unit in a same pixel group respectively, comprises: in the same pixel group, applying a drive voltage of a first polarity to the first sub-pixel and the third sub-pixel of the first position pixel unit respectively, applying a drive voltage of a second polarity to the first sub-pixel and the third sub-pixel of the second position pixel unit respectively, and applying a drive voltage of a second polarity to the first sub-pixel and the third sub-pixel of the third position pixel unit respectively; and applying a drive voltage of a second polarity to the second sub-pixel of the first position pixel unit, applying a drive voltage of a first polarity to the second sub-pixel of the second position pixel unit, and applying a drive voltage of a first polarity to the second sub-pixel of the third position pixel unit; wherein the first polarity and the second polarity are opposite polarities.
This invention relates to display devices, specifically addressing the issue of image quality degradation due to polarity inversion artifacts in pixel arrangements. The technology involves a display panel with pixel units organized into groups, where each group contains at least three pixel units positioned in a sequence. Each pixel unit includes three sub-pixels arranged in sequence: a first sub-pixel, a second sub-pixel, and a third sub-pixel. The invention improves display performance by applying drive voltages with controlled polarities to these sub-pixels within each pixel group. In a given pixel group, the first and third sub-pixels of the first pixel unit receive a drive voltage of a first polarity, while the second sub-pixel of the first pixel unit receives a drive voltage of a second polarity, which is opposite to the first polarity. The second and third pixel units in the group receive opposite polarities compared to the first pixel unit, ensuring that adjacent sub-pixels in the sequence have alternating polarities. This arrangement reduces visual artifacts caused by polarity inversion, enhancing image uniformity and quality. The method ensures that the polarity of the drive voltage applied to each sub-pixel is carefully controlled to minimize distortion and improve display performance.
Unknown
August 18, 2020
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